Thailand and Cambodia have agreed to establish interim observer teams to monitor a fragile ceasefire that ended five days of deadly border clashes.

Top defence officials of Thailand and Cambodia began talks in Malaysia on Monday to hold the ceasefire on the border, a week after the worst fighting broke out between the two Southeast Asian countries in decades.

Preliminary talks between Thailand and Cambodia defense officials started on Monday in Malaysia ahead of a key ministerial level meeting on Thursday, as a fragile truce continues to hold a week after the two sides agreed on a ceasefire.